build: Teach twine that our README.md is in Markdown
#53
| Job | Run time |
|---|---|
| 11s | |
| 1m 19s | |
| 1m 51s | |
| 1m 10s | |
| 1m 53s | |
| 1m 51s | |
| 1m 48s | |
| 1m 46s | |
| 2m 22s | |
| 14m 11s |
twine that our README.md is in Markdown
#53
| Job | Run time |
|---|---|
| 11s | |
| 1m 19s | |
| 1m 51s | |
| 1m 10s | |
| 1m 53s | |
| 1m 51s | |
| 1m 48s | |
| 1m 46s | |
| 2m 22s | |
| 14m 11s |